Heat equalizer for burners



July 19, 1932. K. o. WETZEL HEAT EQUALIZER FOR BURNERS Filed Sept. 16. 1951 A43 INVENTOP:

HURT 0. WET'EEL,

Patented July 19, 1932 UNITED STATES KURT 0. WETZEL, OF LOS ANGELES, CALIFORNIA.

HEAT EQUALIZER FOR BUBNERS Application filed September This invention relates to devices used to raise a cooking utensil a suitable distance above the top surface of the grating above a burner.

5 One of the objects of this invention is to eliminate a spotting of flames towards or on the bottom of the cooking utensil and, in other words, to equalize the heat by providing suitable deflecting means whereby heat 19 is circulated in a whirling manner between a burner and a cooking utensil.

Another object is to provide a spacing member that can easily be placed or removed with respect to a burner to support a cook- 15 ing utensil embodying perforation and deflecting means to distribute the heat from the burner in a certain equalized manner over the under side of the cooking utensil.

Another object is to provide such a spacer made by means of a stamping from a plain sheet material.

Other objects will appear from the following description and appended claims as well as from the accompanying drawing, in which- Fig. 1 is a fragmentary stop plan view of a simple heat equalizer stamped of sheet ma-v terial and formed in a manner according to this invention.

30 Fig. 2 is a fragmentary cross section on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary cross section on line 33 of Fig. 1.

Fig. l is a fragmentary top plan view of the principal body part of the spacer is cut and formed.

As illustrated in the drawing, a large part of portion 5 is made of sheet material cut and formed in a manner to result in a flat bottom side indicated by arrow 6 in Fig. 2, adapted to rest on the stove, or more particularly on the top of the grating over a burner, and embodying the upper surface, indicated by arrow 7, adapted to support a cooking utensil, with the bent portions 8 between the lower and upper surface portions.

A portion of the blank, illustrating approximately the manner in which a sheet is i cut originally, is illustrated 1n Fig. 4, disa blank or fiat piece of material from which 16, 1931. Serial No. 563,077.

tinctly showing strips 9 and 9 connected by slanting strips 10, divided by cut lines 11.

From this illustration it should be noted that the outer edge 12., of the strip 9,, extends beyond the outer edge 12 of the strip 9 in the blank shown here. i.

l/Vhether this blank is formed in one and the same operation with the blanking from a sheet or in a separate operation, it should be clear that the forming operation drawsmaterial of the strip 9 upwardly and there by draws the outer edge 12 to come into alignment with the edge 12 in the finished article.

Having portions of the blankof body 5 of the. finished device raised as illustrated in Fig. 1, and more particularly in Figures 2 and 3, at the same time bends the narrow strips 10in a peculiar and sudden manner, other than directly crosswise or at right angles to the longitudinal edges of the strips 9 and 9 the strips 1O on the one side of the strip 9 distinctly slanting at an angle in one direction while the other strips 10 on the opposite side of the strip 9,,, distinctly slant at an angle somewhat in the opposite direction from the angle of the strips 10 with respect to the longitudinal edges of the strip When so bent and formed, the narrow strips 10 serve the double purpose of forming suitably strong and rigid braces between the lower base strips 9 and the upper or top strips 9 on the one hand, and of forming ventilating and separating deflecting means for the productsof combustion from-the burner over which such a device may be placed, so as to create a heat wave peculiarly circulating below the bottom of the cooking utensil, placed on the top of the'upper strips 9., of this device, instead of causing the usual spotting of the different flames from the burner towards the bottom of the utensil, inasmuch as the peculiarly slanted bracing strips are not, so to say. aligned throughout the body 5 of this device but positively formed to deflect heat atthe angles in which the bracing strips are formed, clearly irregularly throughout the device.

Since the opposite end edges of the strips 9 and 9 and of certain of the narrow bracing strips 10 have no interconnection, doubled-up edge strips 13 are slipped over the end edges of the body member 5, being clinched at sev eral points to the longitudinal strips 9 as indicated at 1% by suitable depressions in the strips 13.

Though the longitudinal strips 9 have been referred to above as being either at the bottomor at the top of the main body portion 5, it must be understood that some of these strips can be depressed or made to become located at various levels in the finished structure, as for instance, indicated at 9 in Fig. 8.

The shaping or bending of the longitudinal strips, as well as of the bracing strips, serves furthermore favorably in preventing a warping of the finished article insofar a the different strips may easily expand or contract under heat and always retain their original or desired shape.

Having thus described my invention, I claim:

1. Ina heat equalizer of the class described, a body member ofrectangular form having cuts made in certain rows spaced from one another slanting in opposite angles in pairs of rows so as to form uncut strips between such rows, every other uncut strip being raised above the remaining of said uncut strips and the ends of the raised strips being bent so that the terminations again become located in the same level With said remaining strips, and securing members applied over the end edges of all strips.

2. In a heat equalizer of the class described, a body member of rectangular form having cuts made in certain rows spaced from one another slanting in opposite angles in pairs of rows so as to-form uncut strips between such 40' rows, every other uncut strip being raised above the remaining of said uncut strips and the ends of the raised strips being bent so that the terminations again become located in the same level with said remaining strips, and securing members applied over the end edges of all strips, the said securing members being provided with indentations at points adapted to impinge upon the ends of the said uncut strips whereby the raised portion is held rigidly in such raised position with respect to the said remaining uncut strips.

3. In a heat equalizer of the class described, a body member having cuts made in certain rows spaced from one another slanting in opposite angles in pairs of rows so as to form uncut strips between such rows, every other uncut strip being raised above the remaining of said uncut strips and the ends of the raised strips being bent so that the terminations again become located in the same level with said remaining strips.

In testimony that I claim the foregoing as my invention I have signed my name.

KURT O. WETZEL. 

